3b-7+9b=10b+9

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Solution for 3b-7+9b=10b+9 equation:


Simplifying
3b + -7 + 9b = 10b + 9

Reorder the terms:
-7 + 3b + 9b = 10b + 9

Combine like terms: 3b + 9b = 12b
-7 + 12b = 10b + 9

Reorder the terms:
-7 + 12b = 9 + 10b

Solving
-7 + 12b = 9 + 10b

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '-10b' to each side of the equation.
-7 + 12b + -10b = 9 + 10b + -10b

Combine like terms: 12b + -10b = 2b
-7 + 2b = 9 + 10b + -10b

Combine like terms: 10b + -10b = 0
-7 + 2b = 9 + 0
-7 + 2b = 9

Add '7' to each side of the equation.
-7 + 7 + 2b = 9 + 7

Combine like terms: -7 + 7 = 0
0 + 2b = 9 + 7
2b = 9 + 7

Combine like terms: 9 + 7 = 16
2b = 16

Divide each side by '2'.
b = 8

Simplifying
b = 8

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